avcodec/ra144dec: Fix runtime error: left shift of negative value -17

Fixes: 1830/clusterfuzz-testcase-minimized-5828293733384192

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-05-27 13:07:00 +02:00
parent 77d9889821
commit 53c0c637d3